Stone-lifter



D. ENGLISH.

STONE LIPTBR.

(No Model.)

PatentedJuIy 21, 11.885.v

mmme

UNITED STATES PATENT GEEICE,

DANIEL ENGLISH, OF BROOKVILLE, PENNSYLVANIA.

STONE-LIFTER.

SPECIFICATIQN forming part of Letters Patent No. 322,813, dated July 21, 1885.

Application filed May 29, 1885.

- clear, and exact description of the invention,

such as will enable others skilled in the art to which it pertains to make and use it,l` reference being had to the accompanying drawing, which forms part of this specification.

My invention relates to an improvement in stone-litters, the object being to provide a lifter of simple and durable construction and` of Asmall initial cost; and to that end my invention consists in the peculiar construction and arrangement of parts, as hereinafter fully set forth.

In the accompanying drawing I show the front elevation of myV improved stone-lifter.

To put my invention into practice, I providea frame, A, in two parts, and secured together by bolts c, operated by a sleeve-nut, b, placed somewhat below the middle of the frame A. At or near the lower ends of the frameAareplacedself-adjustingpiecesc,which will conform to any irregularity in the sides of the stone B. A short distance above the bolts c the inside of the frame A inclines inwardlyuntil it reaches the top. A groove, d, is cut in both sides of the frame, commencing below the beginning of the inclined surfaces e. Between the frame A is placed a cross-bar, g, with tongues h at either end, which, when placed in position, allow the bar g to move vertically in the grooves d. An eyebolt, i,

(No model.)

is secured to the cross-bar g, through which the hook k onthe chain of any crane or elevator is secured.

To use my improved stone-lifter, the lower part of the frame A is placed on either side of the stone B or other substance to be raised. The two sides of the frame A are brought together by turning the sleevenut b. The cross bar g is first let down until the tongues h rest in the bottom of the grooves d, the sides of the frame A being brought together as far as the adjusting-pieces c will admit. The crane or elevator is now put in motion, and thecross-bar g moves up the grooves d, acting as a wedge, while the sides of the frame A are levers, of which the bolts a are the fulcrums. It is obvious that the greater the weight to be lifted the tighter the sel f-adjusting pieces c will clutch the stone.

Having thus fully described my invention,

.what I claim, and desire to secure by Letters own I have hereto affixed my signature in presence of two witnesses.

. DANIEL ENGLISH. Vitnesses:

W. C. BARE, A. J. PEARsoN. 

